If you're looking for a promotional product with eye-catching features, our Cool Color Change Bottles certainly fit the bill. Like a scientist turning into a green-skinned monster when rage overtakes him, these bottles change color in a matter of seconds. They're activated with ice-cold water or other cold beverages, though, and not anger. Which is nice. A product that works only when the user is angry really isn't good for advertising.

You might wonder why the color changes on the Cool Color Change Bottles aren't more extreme. Like, why can't we turn a blue bottle into a rainbow-colored one, or make a purple bottle all glittery and silver? Well, as fun as these bottle are to watch, your customers probably will be using them during certain activities that require some focus:

• Riding a bike
• Exercising in the gym
• Running in city-wide marathons

Plus, it's not as if the big green guy in the comics had any dramatic color changes. Except that he was gray for a little while. And then there was a red version. And... ah, well. Smash the competition with the Cool Color Change Bottles from QLP!

Extreme temperature change is required for color change to take place.